Multiple Gaseous Discharge Display Panel Patents (Class 313/582)
  • Patent number: 8227987
    Abstract: Provided are a protecting layer for a plasma display panel (PDP), a method of forming the same, and a PDP including the protecting layer. The protecting layer includes a magnesium oxide-containing layer having a surface to which magnesium oxide-containing particles having a magnesium vacancy-impurity center (VIC) are attached. The protecting layer is resistant to plasma ions and has excellent electron emission effects, and thus, a PDP including the protecting layer can be operated at low voltage with high discharge efficiency.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: July 24, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Min-Suk Lee, Jong-Seo Choi, Suk-Ki Kim, Yury Matulevich, Jae-Hyuk Kim, Soon-Sung Suh, Hee-Young Chu
  • Patent number: 8227988
    Abstract: Provided is a material for forming barrier ribs, barrier ribs formed using the material, and a PDP comprising the barrier ribs. The material is photosensitive and made from a glass frit composition which is environmentally friendly (no Pb or Bi) and also prevents light scattering. The primary component of the glass frit is P2O5. Other components can be included in the barrier rib forming material such as an alkali-based metal oxide, B2O3, SiO2, etc. The barrier rib formed of the glass frit can additionally include a photosensitive organic material which may include a crosslinking agent, a polyfunctional monomer or oligomer, a photo initiator, a binder and an additive. A method of forming the barrier ribs comprising the glass frit composition is also provided as is a PDP including such barrier ribs.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung SDI Co., Ltd
    Inventors: Beom-Wook Lee, Jong-Seo Choi, Kwi-Seok Choi, Myung-Duk Lim, Bum-Jin Chang, Jong-Hee Hwang
  • Patent number: 8227986
    Abstract: Provided are a film unit which can protect a screen of a display device by absorbing and spreading an impact applied from the outside of the display device, and a plasma display panel having the film unit. The film unit includes a base film having a predetermined area and thickness and provided with a plurality of openings formed in a direction of the thickness thereof; and a cover layer sealing tops of the plurality of openings so that a self-elasticity is formed by an air layer positioned in a closed space of the opening.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Do-Hyuk Kwon, Sung-Yong Lee
  • Patent number: 8223090
    Abstract: A plasma display device is disclosed. The device includes a plasma display panel including an address electrode, first and second display electrodes crossing the address electrode, a dielectric layer covering the display electrodes, and an MgO protective layer covering the dielectric layer. The device also includes a driver configured to generate a sustain pulse width of 1 to 3.5 ?s, and a statistical delay time (Ts) depending on temperature is represented by the following Formula 1: y=A×e?kx??(Formula 1), wherein k is a constant, x is 1/temperature, y is 1/Ts, and A is a constant. The MgO protective layer may be formed by MgO deposition in which water vapor partial pressure is in a range of from 2×10?7 to 6×10?7 Torr·l/s. The temperature dependency of the discharge characteristics is reduced, response speed is improved, and the discharge stability is improved.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: July 17, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Ki-Dong Kim
  • Patent number: 8221179
    Abstract: The cavity 102 defines an empty volume formed in the insulator 108 has its walls defined by the insulator 108 and may extend through either (or both) the first electrode 106 or the second electrode 104, in which case the first electrode and/or second electrode also define the walls of the cavity 102. The cavity 102 is preferably cylindrical and has a diameter of 0.1 ?m-1 mm. More preferably, the diameter ranges from 0.1 ?m-500 ?m, 1 ?m-100 ?m, or 100 ?m-500 ?m. The cavity 102 will be filled with a gas that contacts the cavity walls, fills the entire cavity 102 and is selected for its breakdown voltage or light emission properties at breakdown. Light is produced when the voltage difference between the first electrode 106 and the second electrode 104 creates an electric field sufficiently large to electrically break down the gas (nominally about 104 V-cm). This light escapes from the microcavity 102 through at least one end of the cavity 102.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 17, 2012
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Patent number: 8216017
    Abstract: In a method of fabricating a planar light source, a first substrate is formed at first. First electrodes approximately parallel to each other are formed on the first substrate. Sets of first dielectric patterns are formed on the first substrate. Each set of the first dielectric patterns includes at least two first striped dielectric patterns, and each of the first striped dielectric patterns covers one of the first electrodes correspondingly. The edges of the top of each first striped dielectric pattern are raised in a peak shape. A phosphor layer is formed between the first striped dielectric patterns of each set of the first dielectric patterns. A second substrate is formed. The first and second substrates are bound; meanwhile, a discharge gas is injected into the discharge space.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: July 10, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Yu-Heng Hsieh, Chu-Chi Ting, Shinn-Haw Huang, Chang-Jung Yang, Chia-Hua Ai
  • Patent number: 8212477
    Abstract: A plasma display panel has a first substrate, plural pairs of display electrodes, a second substrate, and plural data electrodes. Each pair of the display electrodes is made up of a scanning electrode and a sustain electrode which are arranged parallel to each other on the first substrate. The second substrate is disposed opposite to the first substrate. A discharge space is formed between the first substrate and second substrate. The data electrodes are arranged in a direction perpendicular to the display electrodes on the second substrate. The data electrode is wider in peripheral portion of the second substrate than in a central portion of the second substrate.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: July 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Tomohiro Murakoso, Kenji Ogawa, Toru Ando, Kentaro Ueda, Yohei Koshio, Ryuichi Murai
  • Patent number: 8207671
    Abstract: A plasma display panel including: a first substrate and a second substrate utilized to display images; a dielectric wall disposed between the first and second substrates and defining a plurality of discharge cells; a first discharge electrode disposed in the dielectric wall; a second discharge electrode disposed on the second substrate to cross the first discharge electrode; and a phosphor layer formed on the first substrate. Accordingly, plasma can efficiently arrive at the phosphor layer, thereby increasing discharge efficiency.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: June 26, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yong-Shik Hwang, Kyoung-Doo Kang, Won-Ju Yi, Jae-Ik Kwon
  • Patent number: 8206611
    Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1?pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: June 26, 2012
    Assignees: Mitsubishi Chemical Corporation, Independent Administrative Institution National Institute for Materials Science
    Inventors: Naoto Hirosaki, Takatoshi Seto, Naoto Kijima
  • Patent number: 8207670
    Abstract: A paste composition for forming an electrode includes: Component A: a conductive powder; Component B: a glass frit having a transmittance of about 65% or less at a wavelength of 550 nm; Component C: an organic binder; and Component D: a solvent.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 26, 2012
    Assignee: Cheil Industries, Inc.
    Inventors: Sang Hee Park, Deok Young Choi, Byung Cheol Lee, Hee In Nam, Hyun Don Kim
  • Patent number: 8198811
    Abstract: A gas discharge device such as a plasma display panel (PDP) device having one or more substrates and a multiplicity of pixels or subpixels. Each pixel or subpixel is defined by a hollow Plasma-shell filled with an ionizable gas. One or more addressing electrodes are in electrical contact with each Plasma-shell. The Plasma-shell may include inorganic and organic luminescent materials that are excited by the gas discharge within each Plasma-shell. The luminescent material may be located on an exterior and/or interior surface of the Plasma-shell or incorporated into the shell of the Plasma-shell. Up-conversion and down-conversion materials may be used. The substrate may be rigid or flexible with a flat, curved, or irregular surface.
    Type: Grant
    Filed: May 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Imaging Systems Technology
    Inventors: Daniel K. Wedding, Carol Ann Wedding, Oliver M. Strbik, III
  • Patent number: 8198810
    Abstract: A method of manufacturing an electromagnetic wave shield for a plasma display panel having a first panel having an image-displaying surface, the method including coating the image-displaying surface of the first panel with a coating solution to form a hydrophobic layer; applying a conductive ink to the hydrophobic layer utilizing an ink-jet applicator to form a pattern of the conductive ink; and heating the conductive ink and the hydrophobic layer to form a conductive mesh pattern on the hydrophobic layer.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: June 12, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jaeseok Lim, Sangyoung Jin, Minhyung Kim, Heeyoul Yoon, Ria Ju, Younghak Pyo, Seunghyuck Paek, Sangchul Seo
  • Patent number: 8198813
    Abstract: A plasma display panel including a front panel including a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space. The protective layer includes a base film on the dielectric layer and aggregated particles of a plurality of aggregated metal-oxide crystal particles attached to the base film so that they are distributed over an entire surface. The aggregated particles are attached so that the number of aggregated particles per 10000 ?m2 is not less than 45 and not more than 350.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 12, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshinao Ooe, Shinichiro Ishino, Yuichiro Miyamae, Koyo Sakamoto, Shinya Nakashima, Ryoichi Inoue, Kaname Mizokami
  • Patent number: 8193709
    Abstract: A plasma display panel includes a pair of substrates facing each other, barrier ribs defining discharge cells between the pair of substrates, sustain electrodes between the pair of substrates, the sustain electrodes including second bus electrodes along a first direction, the second bus electrodes being on the barrier ribs, scan electrodes between the pair of substrates, the scan electrodes including first bus electrodes along the first direction, the first bus electrodes being positioned between adjacent second bus electrodes, address electrodes between the pair of substrates, the address, scan, and sustain electrodes being configured to generate discharge in the discharge cells, and phosphors in the discharge cells, the phosphors being configured to emit light by the discharge.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: June 5, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Woo-Joon Chung, Tae-Jun Kim
  • Patent number: 8188661
    Abstract: A plasma display panel (PDP), which is capable of performing a display with a high brightness and having a low power consumption, includes a front panel having display electrodes formed, a dielectric layer covering the display electrodes, and a protective layer formed on the dielectric layer. Further, the PDP includes rear panel having address electrodes formed along a direction intersecting the display electrodes, and barrier ribs. The front and rear panels form, therebetween, a discharge space portioned by the barrier ribs and filled with discharge gas. A protective layer is formed of a metal oxide of MgO and CaO, such that an X-ray diffraction analysis on a surface of the protective layer indicates that the metal oxide has a peak between a diffraction angle where a peak of MgO occurs and a diffraction angle where a peak of CaO occurs along an identical orientation of the MgO peak.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 29, 2012
    Assignee: Panasonic Corporation
    Inventors: Jun Hashimoto, Masashi Gotou, Yasuyuki Noguchi
  • Patent number: 8188660
    Abstract: A plasma display panel including a first substrate and a second substrate, the first substrate having an inner surface facing the second substrate, at least one dark-colored visible ray absorbing layer on the inner surface of the first substrate, at least one discharge sustaining electrode pair on the visible ray absorbing layer, a first dielectric layer on the discharge sustaining electrode pair, an address electrode on the second substrate and disposed in a direction crossing the discharge sustaining electrode pair, a second dielectric layer on the address electrode, barrier ribs disposed between the first substrate and the second substrate and defining a plurality of discharge cells, and a phosphor layer coated in the discharge cells.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 29, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Hiroshi Kanda
  • Patent number: 8188659
    Abstract: An electrode composition includes a metal in an amount of about 52% to about 62% by weight of the composition, a glass insulation material in an amount of about 5% to about 7% by weight of the composition, a coloring agent in an amount of about 3% to about 9% by weight of the composition, and a vehicle.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: May 29, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chul-Hong Kim, Jung-Keun Ahn, Hyun-Mi Jeong, Yeon-Joo Choi
  • Patent number: 8183777
    Abstract: A high definition plasma display panel which can display a video of a higher brightness and yet can be driven at a low power consumption is realized. To this end, a plasma display panel includes front panel including display electrode formed on glass substrate, dielectric layer 8 covering display electrode, and protective layer formed on dielectric layer; and a rear panel opposing to front panel to form a discharge space filled with discharge gas, and including an address electrode formed along a direction intersecting with display electrode, and a barrier rib partitioning the discharge space. Protective layer is formed of a metal oxide made of magnesium oxide and calcium oxide and contains silicon. In an X-ray diffraction analysis on a surface of protective layer, a diffraction angle where a peak of the metal oxide occurs exists between a diffraction angle where a peak of the magnesium oxide occurs and a diffraction angle where a peak of the calcium oxide occurs.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: May 22, 2012
    Assignee: Panasonic Corporation
    Inventors: Jun Hashimoto, Masashi Gotou
  • Patent number: 8183773
    Abstract: A plasma display panel (PDP) including a front substrate and a rear substrate facing each other, a partition wall interposed between the front substrate and the rear substrate to define a plurality of unit cells, each unit cell including a main discharge space, an auxiliary discharge space, and a step space, the auxiliary discharge space and the step space being on opposite sides of the main discharge space along a stepped sidewall of the partition wall, pairs of scanning and sustain electrodes arranged adjacent the auxiliary discharge spaces and to the step spaces, respectively, address electrodes extending to cross the scanning electrodes at a location adjacent to the auxiliary discharge spaces, a phosphor layer formed at least in the main discharge spaces, and discharge gas filling the unit cell.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: May 22, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Seung-Hyun Son
  • Patent number: 8183774
    Abstract: In a front plate for PDP, which includes: a large number of display electrodes formed in stripes on a substrate; a plurality of terminal groups for connection with an external drive circuit, each terminal group being formed along an edge of the substrate, the edge being extended in a direction orthogonal to an extending direction of the display electrode; and a large number of lead electrodes extended from the display electrodes, respectively, in a non-image display region on the substrate to gather toward any one of the terminal groups without intersecting each other, the lead electrodes being connected to corresponding terminals in the relevant terminal group, respectively, further, a large number of strip-shaped aid members for aiding formation of a dielectric layer are formed in a region located between the adjacent terminal groups. Thus, it is possible to make a circumference of a dielectric layer even although a dielectric material to be used is low in viscosity.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: May 22, 2012
    Assignee: Panasonic Corporation
    Inventor: Shuzo Tsuchida
  • Patent number: 8179041
    Abstract: A plasma display panel (PDP) includes a first plate, and a second plate disposed to face the first plate via a discharge space and providing barrier ribs. A plurality of first electrodes and a plurality of second electrodes extending in a first direction, and a dielectric layer covering the first electrodes and the second electrodes are provided on the first plate. A plurality of address electrodes extending in a second direction, and a protective layer covering the dielectric layer and the address electrodes and exposing at least a part of the protective layer to the discharge space are provided on the dielectric layer. The address electrodes are made up by including a conductive layer formed by either one of aluminum and an alloy containing aluminum and copper and by not including a layer of a simple substance of copper.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: May 15, 2012
    Assignees: Hitachi, Ltd., Hitachi Plasma Display Limited
    Inventors: Hideaki Yanagita, Masahiro Watabe, Takahiko Kato, Takashi Naito
  • Patent number: 8174192
    Abstract: A plasma display panel includes a front panel having a front substrate having a plurality of arrays of display electrodes each including a scanning electrode and a sustain electrode opposed to each other with a discharge gap being defined therebetween and a rear panel having a rear substrate opposed to a front substrate and having partition walls for partitioning a discharge space between the rear panel and the front panel, data electrodes formed between partition walls in such a fashion that the data electrodes intersect with the display electrodes, and phosphor layers formed between partition walls, wherein the rear panel forms partition walls so as to divide the discharge space in a plurality of regions along a direction parallel to the data electrodes, and blue phosphor layers are formed on boundary parts of the plural regions.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: May 8, 2012
    Assignee: Panasonic Corporation
    Inventors: Kentaro Ueda, Nobutaka Hokazono, Masanori Suzuki, Toshifumi Nagino, Ryuichi Murai
  • Patent number: 8169143
    Abstract: A plasma display panel (200) of the present invention includes a first panel (1) and a second panel (8). A discharge space (14) is formed between the first panel (1) and the second panel (8). In the plasma display panel (200), an electron emitting material (20) is disposed to face the discharge space (14). The electron emitting material (20) contains Sn, an alkali metal, O (oxygen), and at least one element selected from the group consisting of Ca, Sr, and Ba.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: May 1, 2012
    Assignee: Panasonic Corporation
    Inventors: Yayoi Okui, Osamu Inoue, Kojiro Okuyama, Seigo Shiraishi
  • Patent number: 8169142
    Abstract: A display apparatus includes a plurality of first electrodes, a second electrode facing the plurality of first electrodes, and a plurality of microcapsules. Each of the plurality of first electrodes corresponds to one of a color. The plurality of microcapsules have a dispersion media and a plurality of particles sealed therein and are disposed between the plurality of first electrodes and the second electrode. A microcapsule of the plurality of microcapsules providing one of the colors is arranged on the first electrode that corresponds to the one of the colors.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: May 1, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Hideyuki Kawai
  • Patent number: 8164245
    Abstract: It is an object to provide a plasma display and a field emission display that each have high visibility and an anti-reflection function that can further reduce reflection of incident light from external. Reflection of light can be prevented by having an anti-reflection layer that geometrically includes a plurality of adjacent pyramidal projections. In addition, a plurality of hexagonal pyramidal projections, each of which is provided with a protective layer formed of a material having a lower refractive index than a refractive index of the pyramidal projection so as to fill a space among the plurality of pyramidal projections, can be provided to be packed together without any spaces. Further, six sides of a pyramidal projection face different directions with respect to a base. Therefore, light can be diffused in many directions efficiently.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: April 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jiro Nishida, Yuji Egi, Takeshi Nishi, Shunpei Yamazaki
  • Patent number: 8164259
    Abstract: A first aim of the present invention is to provide a PDP capable of stably delivering favorable image display performance and being driven with low power, by improving the surface layer to improve secondary electron emission characteristics and charge retention characteristics. A second aim of the present invention is to provide a PDP, in addition to having the above-mentioned effects, capable of reducing an aging time. In order to achieve these aims, a crystalline film of a film thickness of approximately 1 ?m is disposed as a surface layer (protective film) 8 on a surface of the dielectric layer 7 that faces a discharge space. The surface layer 8 is made by adding Sr to CeO2, and a concentration of Sr in the surface layer 8 is in a range of 11.8 mol % to 49.4 mol % inclusive. With this structure, an attempt is made to improve the secondary electron emission characteristics and aging characteristics in the surface layer 8.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: April 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Yusuke Fukui, Masahiro Sakai, Mikihiko Nishitani, Yosuke Honda, Michiko Okafuji, Yasuhiro Yamauchi
  • Patent number: 8164260
    Abstract: A dielectric composition for plasma display panel and a plasma display panel including the same are disclosed. The dielectric composition includes about 38 to 68 parts by weight of Bi2O3, about 10 to 35 parts by weight of B2O3, about 1 to 17 parts by weight of SiO2, and about 1 to 15 parts by weight of Al2O3.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: April 24, 2012
    Assignee: LG Electronics Inc.
    Inventors: Woong Choi, Donghee Nam
  • Patent number: 8159133
    Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate positioned opposite the front substrate, and a barrier rib that is positioned between the front substrate and the rear substrate to partition discharge cells. The barrier rib includes a transverse barrier rib and a longitudinal barrier rib crossing each other. Depressions are positioned to be spaced apart from each other at a barrier crossing of the transverse barrier rib and the longitudinal barrier rib.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: April 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Jaeyoung Oh, Jiwon Woo
  • Patent number: 8159508
    Abstract: An electroluminescent display comprises a substrate with a plurality of pixel regions, wherein each pixel region has a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region. Pluralities of first color light-emitting layers, second color light-emitting layers, and third color light-emitting layers are formed on the substrate. Each first color light-emitting layer is disposed in one first sub-pixel region, and each second color light-emitting layer is disposed in two adjacent second sub-pixel regions. The area of the first sub-pixel region is larger than the area of the second sub-pixel region in a single pixel region.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: April 17, 2012
    Assignee: AU Optronics Corp.
    Inventor: Chung-Chun Lee
  • Patent number: 8154203
    Abstract: A plasma display member does not cause an erroneous discharge in a display region end portion and includes: a substrate (1); a substantially stripe-shaped address electrode (2) arranged on the substrate (1); a dielectric layer (3) covering the address electrode (2) and a grid-shaped partition arranged on the dielectric layer (3) and having main walls (4) substantially parallel to the address electrode (2) and auxiliary walls (5) intersecting the main partitions (4). The auxiliary wall (5) intersecting the main wall (4) located at the outermost position among the main walls (4) located at non-display regions (7) at the right and left of a display region (6) has a bottom width identical to the bottom width (L1) of the main wall (4) located at the outermost position among the main walls (4) located at the non-display regions (7) at the right and left of the display region (6) which is multiplied by 0.3 to 1.0.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: April 10, 2012
    Assignee: Panasonic Corporation
    Inventors: Minori Kamada, Kenichi Kawabe
  • Patent number: 8154864
    Abstract: The present invention is a robust LED display module for use in an electronic sign which display module includes a metallic housing, a heat conductive interface panel, an LED circuit board and LEDs, and a metallic mask arranged in intimate contact and association therewith, and which components operate synergistically in concert with each other in order to evenly distribute, reduce and dissipate heat along, about and within the structure of the present invention. Display uniformity is provided by the use of major metallic structures in order to prevent warpage and to protect the geometric integrity of the LED display module.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: April 10, 2012
    Assignee: Daktronics, Inc.
    Inventors: Nathan L. Nearman, Shannon Lee Mutschelknaus, Matthew R. Mueller, Douglas P. Tvedt, Kent S. Miller, Mark D. Dennis, John L. Hage, Ryan J. Nielsen
  • Patent number: 8154204
    Abstract: A plasma display panel includes a front plate having a dielectric layer covering a display electrode formed on a substrate and a protective layer formed on the dielectric layer, and a rear plate facing the front plate so as to form a discharge space. The plasma display panel also includes an address electrode in a direction crossing the display electrode, barrier ribs for partitioning the discharge space, and phosphor layers. The protective layer is constructed by forming a ground film on the dielectric layer and adhering agglomerated particles to the ground film. The agglomerated particles are produced by coagulating a plurality of crystal particles made of metal oxide.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 10, 2012
    Assignee: Panasonic Corporation
    Inventors: Kaname Mizokami, Hiroshi Sogou, Shigeyuki Okumura
  • Patent number: 8153540
    Abstract: The invention relates to the field of display screens, especially plasma screens. One subject of the invention is a glass composition which comprises the constituents below in the following weight proportions: SiO2 ?55-75%; Al2O3 ??1-5%; ZrO2 ??1-5%; Na2O ??1-5.5%; K2O ??1-9%, preferably 1-8.5%, and advantageously ??1-7.5%; CaO ??7-11%; and SrO ??3-9%, preferably 3.5-9%, and advantageously 4.5-9%, said composition having an Al2O3/ZrO2 weight ratio varying from 0.7 to 1.8, preferably from 0.7 to 1.2. The substrates obtained have a strain point at least equal to 570° C. and a coefficient of thermal expansion ?20-300 between 70 and 90×10?7/° C.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: April 10, 2012
    Assignee: Saint-Gobain Glass France
    Inventors: Sung-Min Kwon, Jerome Lalande
  • Patent number: 8148899
    Abstract: A plasma display of this invention includes a front panel, and this front panel includes a substrate, a plurality of display electrode pairs formed in stripes on the substrate, a dielectric layer formed to cover the display electrode pair and the substrate, a dielectric-protective layer formed to cover the dielectric layer, and fine particles containing a crystal of a metal oxide, the fine particles being dispersed on a surface of the dielectric-protective layer. The display electrode pair is provided with a strip-shaped scanning electrode and a strip-shaped sustaining electrode each having a laminate structure of a transparent electrode and a bus electrode. In the surface of the dielectric-protective layer, a first region corresponding to a region facing the bus electrode of the scanning electrode is smaller than a second region corresponding to a region except the first region, with regard to a cover rate of the surface covered with the fine particles.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: April 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Satoshi Maeshima, Michiru Kuromiya, Seiji Nishitani, Masashi Morita
  • Patent number: 8148898
    Abstract: A plasma display panel includes a first and a second panel. The first panel includes a first plate provided with a plurality of display electrodes extending in a first direction. The second panel includes a second plate facing the first plate via a discharge space, a plurality of first barrier ribs provided on the second plate, and a dent part opened to a side of the first plate. The dent part is provided in between the barrier ribs adjacent to each other. A width of the dent part along the first direction is formed to be narrower toward a side of the second plate from the side of the first plate for at least within a range from a position at a half of a depth to a bottom part of the dent part. As a result, a luminescent efficiency of the PDP can be improved.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: April 3, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Yanagita, Takashi Sasaki
  • Patent number: 8143785
    Abstract: A plasma display device includes a plasma display panel for displaying an image by a gas discharge. A chassis base is attached to the plasma display panel and supports the plasma display panel. At least one printed circuit board is mounted on the a side of the chassis base at opposite the side supporting the plasma display panel. At least one flexible printed circuit connects electrodes of the plasma display panel and terminals of the printed circuit boards. An anisotropic conductive film is between the terminal of the printed circuit board and a terminal of the flexible printed circuit and connects the terminal of the printed circuit board and the terminal of the flexible printed circuit. The printed circuit board includes at least one dummy groove outside a region of the printed circuit board facing the flexible printed circuit.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: March 27, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Tae-Kyoung Kang
  • Patent number: 8143771
    Abstract: A filter for a display device includes a base substrate, a shielding film formed based on a single transparent base layer, and an adhesive layer adhering the shielding film onto the base substrate. The shielding film which realizes diverse shielding functions in a single sheet is adhered onto the base substrate through a single process, which serves to improve productivity, reduce manufacturing cost, restrain the occurrence of Haze and improve visibility.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: March 27, 2012
    Assignee: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Dong Keun Shin, Dae Chul Park, Dong Hyun Park, Sang Yoon Oh, Moon Jin Choi, Hwa Yeon Lee
  • Patent number: 8142685
    Abstract: A blue fluorescent material having excellent durability and a high luminance, especially one emitting a high-luminance light by the action of electron rays. The fluorescent material comprises inorganic crystals having a crystal structure which is an AlN crystalline, AlN polycrystalline, or AlN solid-solution crystalline structure. It is characterized in that the inorganic crystals contain at least europium in solution and have an oxygen content of 0.4 mass % or lower and that the fluorescent material emits fluorescence derived from divalent europium ions upon irradiation with an excitation source. More preferably, the fluorescent material contains a given metallic element and silicon. Also provided are a process for producing the fluorescent material and an illuminator including the blue fluorescent material.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: March 27, 2012
    Assignee: National Institute for Materials Science
    Inventor: Naoto Hirosaki
  • Patent number: 8143786
    Abstract: A plasma display panel includes a front panel including a glass front substrate, a display electrode formed on the substrate, a dielectric layer formed so as to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel disposed facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode and a barrier rib partitioning the discharge space. The protective layer is formed by forming a base film on the dielectric layer and attaching a plurality of crystal particles made of metal oxide to the base film so as to be distributed over an entire surface at a covering rate of not less than 1% and not more than 15%.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Koyo Sakamoto, Shinichiro Ishino, Kaname Mizokami, Yuichiro Miyamae, Yoshinao Ooe
  • Patent number: 8138673
    Abstract: Apparatus and method using a gas discharge device for shielding an object and/or person from electromagnetic (EM) radiation including radar, microwaves, X-rays, and/or gamma rays. The device comprises multiple gas discharge cells, each cell being within a gas-filled hollow shell. The gas is selected to absorb radiation particularly when the gas is in a discharge state. The shell may be composed of a radiation absorption material.
    Type: Grant
    Filed: November 22, 2008
    Date of Patent: March 20, 2012
    Assignee: Imaging Systems Technology
    Inventor: Carol Ann Wedding
  • Patent number: 8138993
    Abstract: The control of a plasma display panel, successively comprises, at least for all the cells of a current line having to switch state for the next line: a connection of a terminal of application of an intermediary supply voltage to output terminals of column control stages corresponding to the junction points of first and second switches between two terminals of application of a supply voltage, to perform a precharge or a predischarge of the screen cells; a disconnection of said output terminals from this intermediary voltage; and a connection of each output terminal to a first or to a second power supply voltage by the turning-on of the first or second switch of the corresponding stage, according to a luminance reference value, delayed with respect to the disconnection of the corresponding output terminal from the terminal of application of the intermediary voltage.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: March 20, 2012
    Assignee: STMicroelectronics SA
    Inventors: Jerome Bourgoin, Gilles Troussel
  • Patent number: 8138674
    Abstract: A plasma display panel has heights of barrier ribs prevented from abnormally increasing at positions where a phosphor dispensing process starts and ends, improving discharge performance and uniformity of a panel. A front substrate and a rear substrate face each other. Address electrodes and display electrodes extend separately from each other in a first direction and a second direction, respectively, in a space between the front substrate and the rear substrate, the first direction crossing the second direction. Barrier ribs partition a display area including a plurality of discharge cells in the space between the front substrate and the rear substrate. A non-display area is formed along a periphery of the display area. A phosphor layer is formed in each discharge cell. The non-display area includes a buffer area formed of at least a single region outside the display area.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: March 20, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Seong-Hoon Han
  • Patent number: 8128840
    Abstract: A phosphor composition for a display device, including a phosphor represented by Formula 1: Y3-x-k-zCekMzM?xAla-yM?yO(1.5a+4.5)??(1). In Formula 1, M includes at least one of Tb, Dy, and Eu, M? includes at least one of Sc, Gd, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, z, k, and a represent molar ratios and satisfy the relations: 0.0?x<3.0, 0.0?y?7.0, 0.0<k<0.1, 0.0<z<0.5, 4.0?a?7.0, a-y?0.0, x+k+z?3.0, and 0.01?z/k?20.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: March 6, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jay-Hyok Song, Yu-Mi Song, Yoon-Chang Kim, Do-Hyung Park, Yong-Chan You, Gyeong-Jae Heo, Ick-Kyu Choi, Mi-Ran Song, Seon-Young Kwon, Hyun-Deok Lee, Ji-Hyun Kim, Jin-Hyoung Seo, Sun-Hwa Kwon, Ji-Hyun Kim, Min-Ju Kim, Young-Hun Lee, Young-Ki Kim
  • Patent number: 8129907
    Abstract: The plasma display panel includes: a front panel having a front substrate and display electrodes; and a rear panel having a rear substrate, a barrier rib, a data electrode and a phosphor layer. The rear substrate faces the front substrate to form a discharge space therebetween. The barrier rib is disposed on the rear substrate to divide the discharge space. The data electrode intersects the display electrodes. The phosphor layer is disposed between the barrier ribs. Further, the display electrodes are formed at a plurality of divided areas separately. The plurality of divided areas is the areas that the front substrate is divided into by a boundary intersecting the display electrodes. The display electrodes formed in the plurality of divided areas have unevenesses in profiles thereof at the boundary between the plurality of divided areas. This configuration easily provides a plasma display panel having a large screen and high resolution as display quality.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: March 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Masanori Suzuki, Nobutaka Hokazono, Kentaro Ueda, Toshifumi Nagino
  • Patent number: 8129906
    Abstract: A display device constructed out of one or more lumino-shells with an organic luminescent substance(s) located in and/or on each shell, the organic luminescent substance emitting light when excited by electric current. Inorganic luminescent substance(s) may be combined with the organic luminescent substance(s). The lumino-shell includes lumino-sphere, lumino-dome, and lumino-disk.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: March 6, 2012
    Assignee: Imaging Systems Technology, Inc.
    Inventors: Carol Ann Wedding, Oliver M. Strbik, III
  • Patent number: 8129905
    Abstract: The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device, and chromaticity y comparable to that of BAM:Eu. The present invention is a phosphor represented by the general formula aAO.bEuO.DO.cSiO2, where A is at least one selected from Ca, Sr and Ba, D is at least one selected from Mg and Zn, and 2.970?a?3.500, 0.001?b?0.030, and 1.900?c?2.100 are satisfied. In this phosphor, a peak intensity at 1490 cm?1 is 0.02 to 0.8 when a peak intensity at 565 cm?1 is set to 1 in a spectrum obtained by measurement using photoacoustic spectroscopy.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Masahiro Sakai, Seigo Shiraishi
  • Publication number: 20120049730
    Abstract: A plasma display panel includes a front plate, a rear plate, and a bonding layer to bond the front plate to the rear plate. The front plate has a protective layer. The rear plate has a barrier rib. The protective layer includes a base layer. Aggregated particles are dispersed all over the base layer. The base layer contains a first metal oxide and a second metal oxide. Through an X-ray diffraction analysis, a peak of the base layer exists between a first peak of the first metal oxide, and a second peak of the second metal oxide. The first metal oxide and the second metal oxide are two kinds of oxides selected from a group consisting of MgO, CaO, SrO, and BaO. The rear plate has a barrier rib. The bonding layer bonds at least one part of the barrier rib to the protective layer.
    Type: Application
    Filed: March 7, 2011
    Publication date: March 1, 2012
    Inventors: Takehiro Zukawa, Hai Lin, Tasuku Ishibashi, Kyohei Yoshino, Kazuya Nomoto, Takuji Tsujita
  • Patent number: 8123986
    Abstract: A plasma display device and a method of manufacturing a plasma display panel (PDP) are provided. The method includes applying onto a substrate a black matrix paste for forming a black matrix and an electrode paste for forming an electrode; laminating a dielectric material on the substrate; and firing the black matrix paste, the electrode paste, and the dielectric material at the same time. Therefore, it is possible to simplify the manufacture of a PDP by firing electrodes, black matrices, and a dielectric material at the same time. In addition, it is possible to reduce the probability of the generation of air bubbles by appropriately reducing the amount of glass frit in a paste. Moreover, it is possible to enhance the efficiency of driving a PDP and the reliability of a plasma display device.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: February 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: Jung Sok Noh, Young Woo Seo, Chang Min Han
  • Patent number: 8125148
    Abstract: A plasma display panel includes a front substrate, a rear substrate arranged to face the front substrate, barrier ribs for partitioning discharge cells between the front substrate and the rear substrate, and an exhaust hole formed on the rear substrate in an area between the barrier ribs and the seal layer. A distance between the outermost barrier rib and the seal layer is less than a circumferential length of the exhaust hole.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: February 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: Wontae Kim, Hungun Park, Younjin Kim
  • Patent number: 8125150
    Abstract: A plasma display panel (PDP) including first and second substrates arranged opposite to each other, a plurality of first electrodes between the first and second substrates, a dielectric layer disposed on the first substrate, a plurality of second electrodes disposed in a direction crossing the first electrodes, and red, green, and blue phosphor layers disposed between the first and second substrates, wherein the dielectric layer includes a lead-free glass and at least one of CoO, CuO, MnO2, Cr2O3, or Fe2O3 as a metal oxide additive.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 28, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae-Joung Kweon, Sung-Hune Yoo